Protective structure for screw screening

Abstract

The utility model discloses a protection structure for screw screening, which relates to the technical field of screw screening protection structure design and comprises a supporting fixing plate, a screw screening unit and a screw protection collecting unit. Four supporting vertical rods in a rectangular array are fixedly connected to the upper side surface of the supporting fixing plate, screw screening units are arranged at the positions, located among the four supporting vertical rods, of the upper side surface of the supporting fixing plate, and circular chamfers are arranged at the four corners of the supporting fixing plate. The screw protecting and collecting unit comprises a stable supporting block, an arc-shaped protecting plate, a protecting inner ring, a magnetic fixing ring, a collecting frame and an arc-shaped protecting cover, during sorting, screws are protected, screw screening and using are not affected, the screws are prevented from being damaged, screening and using are convenient, and using is not affected.

Description

Technical Field

[0001] The utility model relates to the technical field of screw screening protection structure design, in particular to a screw screening protection structure. Background Art

[0002] Screws are tools that use the physics and mathematical principles of the circular rotation of the inclined surface of an object and the friction force to gradually fasten objects and parts. Screws are a general term for fasteners and a daily colloquialism. Screws are indispensable industrial necessities in daily life: such as very small screws used in cameras, glasses, clocks, electronics, etc.; general screws for televisions, electrical products, musical instruments, furniture, etc.; as for engineering, construction, and bridges, large screws are used. During production, in order to screen out unqualified screws, during screening, in order to protect the screws and prevent them from being damaged, a protective structure for screw screening is needed.

[0003] The existing protective structure for screw screening has the problem that the screws are not protected during sorting, which affects the use of screw screening and is easy to damage the screws, making the screening inconvenient and affecting the use. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a protective structure for screw screening. During sorting, the screws are protected and the use of the screws for screening is not affected, thereby preventing damage to the screws. The screening is convenient and does not affect the use, thereby effectively solving the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a protective structure for screw screening, comprising a supporting fixing plate, a screw screening unit, and a screw protection collection unit;

[0006] Support fixing plate: The four corners of the lower surface are respectively fixedly connected to a support leg, the upper surface of the support fixing plate is fixedly connected to four support vertical rods in a rectangular array, the upper surface of the support fixing plate is provided with a screw screening unit at a position between the four support vertical rods, and the four corners of the support fixing plate are provided with circular chamfers;

[0007] The screw protection collection unit: comprises a stable support block, an arc-shaped protection plate, a protection inner ring, a magnetic fixing ring, a collection frame and an arc-shaped protection cover; the upper surface of the fixed circular plate in the screw screening unit is fixedly connected to four stable support blocks of an annular array, and one side corresponding to the four stable support blocks is fixedly connected to an arc-shaped protection plate respectively; the upper surface of the conveying circular plate in the screw screening unit is fixedly connected to a magnetic fixing ring, and four arc-shaped protection plates are arranged at the outer side of the magnetic fixing ring; a support frame is fixedly sleeved on the support cylinder in the screw screening unit, and the support frame is arranged at the upper side of the conveying circular plate, and the support frame is fixedly clamped with the protection inner ring, and the protection inner ring is arranged on the inner side of the magnetic fixing ring. Position, the magnetic fixing ring corresponds to four arc-shaped protective plates, and the side surfaces corresponding to the four arc-shaped protective plates and the magnetic fixing ring are respectively fixedly connected with multiple equally spaced protective strips, and notches are respectively opened on the front and right sides of the fixed circular plate, and the two notches respectively penetrate the upper and lower sides of the fixed circular plate, and each notch is respectively arranged between the two arc-shaped protective plates, and the positions on both sides of the notch of the lower side surface of the fixed circular plate are respectively fixedly connected to the collection frame by bolts, and the positions on both sides of the notch of the upper side surface of the fixed circular plate are respectively fixedly connected with an arc-shaped protective cover, and the two arc-shaped protective covers are respectively fixedly connected to the collection frame by pins, and the openings on the two arc-shaped protective covers respectively correspond to the conveying circular plates.

[0008] The support fixing plate is used to fix the support device, the support vertical rod is used to fix the fixed circular plate, the screw screening unit is used to screen the screws, the stable support block is used to fix the arc-shaped protective plate, the arc-shaped protective plate and the protective inner ring cooperate to allow the screws to move between the arc-shaped protective plate and the protective inner ring, thereby transporting the screws, the magnetic fixing ring is used to make the screws more firmly fixed, the collection frame is used to collect the screws for screening, when the screws are screened by the screening camera, the unqualified screws are collected from the collection frame on the right, and the qualified screws are collected from the collection frame on the front, the arc-shaped protective cover is used for protection to prevent the screws from falling, thereby using it.

[0009] Furthermore, the screw protection collection unit also includes a guide inclined plate, and a guide inclined plate is fixedly connected to each of the two collection frames, and a plurality of friction protrusions with equal spacing are respectively arranged on the upper surface of each guide inclined plate.

[0010] The guide inclined plate is used to guide the screws to fall into the collection frame, thereby slowing down the falling speed and preventing the screws from being damaged, thereby protecting the screws.

[0011] Furthermore, the screw protection collection unit also includes a protective pad, and the bottom surface of each collection frame is fixedly connected to the protective pad, and the upper surface of each protective pad is provided with a plurality of rubber protrusions at equal intervals.

[0012] The protective pad is used to protect the screws, thereby protecting the screws. The protective pad is made of rubber elastic material to protect the screws.

[0013] Furthermore, the screw screening unit includes a fixed circular plate, a supporting cylinder, a rotating sleeve, a conveying circular plate, a supporting cylinder, a movable fixed block and a screening camera. The upper surface of the supporting fixed plate is located between four supporting vertical rods and is fixedly connected to a supporting cylinder. The upper surfaces of the four supporting vertical rods are fixedly connected to a fixed circular plate. A circular hole is opened on the upper surface of the fixed circular plate. The circular hole passes through the upper and lower sides of the fixed circular plate. The upper end of the supporting cylinder passes through the circular hole. The supporting cylinder is rotatably connected to the rotating sleeve through a bearing. A conveying circular plate is fixedly sleeved on the rotating sleeve. The conveying circular plate is arranged on the fixed The upper side of the circular plate is located, and the upper surface of the fixed circular plate is located at the position behind the conveying circular plate and is fixedly connected to a supporting cylinder. The supporting cylinder is arranged between two arc-shaped protective plates. A limiting ball is fixedly clamped on the upper end of the supporting cylinder. A movable fixed block is slidably sleeved on the supporting cylinder. A thread is provided on the movable fixed block, and the thread is threadably connected with a bolt. The front side of the movable fixed block is fixedly clamped with a screening camera through a fixing frame. The screening camera corresponds to the conveying circular plate, and the input end of the screening camera is electrically connected to the output end of an external power supply through an external control switch group.

[0014] The fixed circular plate is used to fix the supporting cylinder, the supporting cylinder is used to support the mobile fixed block, the mobile fixed block is used to fix the screening camera, the screening camera uses a high-definition screening camera to sort the screws, which is convenient for screening. The mobile fixed block is adjusted to the appropriate position on the supporting cylinder, and then the mobile fixed block is fixed to the supporting cylinder by bolts. The supporting cylinder is used to fix the rotating sleeve, the rotating sleeve is used to fix the conveying circular plate, and the conveying circular plate is used to transport the screws for screening.

[0015] Furthermore, the screw screening unit also includes a power gear, a power motor and an output cylinder. A power motor is fixedly connected to the upper surface of the supporting fixing plate at a position on the left side of the supporting cylinder. The output shaft on the power motor is fixedly engaged with the output cylinder. The output cylinder is fixedly sleeved with a power gear on the rotating sleeve. The two power gears are meshed with each other. The input end of the power motor is electrically connected to the output end of the external power supply through an external control switch group.

[0016] The power motor is started to rotate the output cylinder, which drives one of the power gears to rotate. The two power gears are meshed to rotate the other power gear, thereby providing power for the movement of the screw, which is convenient for sorting.

[0017] Furthermore, the screw screening unit also includes a support frame and a power air gun. The upper side of the protective inner ring is located at positions corresponding to the two collection frames and is fixedly connected to a support frame respectively. A power air gun is fixedly connected to each of the two support frames. The air jets on the two power air guns correspond to the magnetic fixing rings. The input end of the power air gun is electrically connected to the output end of an external power supply through an external control switch group.

[0018] The support frame is used to fix the power air gun. When the power air gun is started, it is convenient to blow the screws and let the screws fall into the collection frame for sorting and collection. The power air gun uses an air pump air gun to provide power for pushing the screws to move.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] 1. The protective structure for screw screening has the following advantages: a screw protection collection unit is provided, and a stable support block is used to fix the arc-shaped protective plate. The arc-shaped protective plate cooperates with the protective inner ring to allow the screws to move between the arc-shaped protective plate and the protective inner ring, thereby conveying the screws. The magnetic fixing ring is used to make the screws more firmly fixed. The collection frame is used to collect the screws for screening. After the screws are screened by the screening camera, unqualified screws are collected from the collection frame on the right, and qualified screws are collected from the collection frame on the front. The arc-shaped protective cover is used for protection to prevent the screws from falling. The guiding inclined plate is used to guide the screws to fall into the collection frame, thereby slowing down the falling speed and preventing the screws from being damaged. The protective cushion is used to protect the screws, thereby protecting the screws. The protective cushion is made of rubber elastic material to protect the screws during screening.

[0021] 2. The protective structure for screw screening has the following advantages: a screw screening unit is provided, a fixed circular plate is used to fix the supporting cylinder, the supporting cylinder is used to support the movable fixed block, the movable fixed block is used to fix the screening camera, the screening camera adopts a high-definition screening camera to sort the screws, which is convenient for screening and use, the movable fixed block is adjusted to a suitable position on the supporting cylinder, and then the movable fixed block is fixed to the supporting cylinder by bolts, the supporting cylinder is used to fix the rotating sleeve, the rotating sleeve is used to fix the conveying circular plate, the conveying circular plate is used to convey the screws, the power motor is started to rotate the output cylinder, the output cylinder drives one of the power gears to rotate, the two power gears are meshed, and the other power gear is rotated, thereby providing power for the movement of the screws, the support frame is used to fix the power air gun, the power air gun is started, it is convenient to blow the screws, so that the screws fall into the collection frame, thereby sorting and collecting, and screening the screws;

[0022] 3. The protective structure for screw screening has the following advantages: during sorting, the screws are protected, the use of screw screening is not affected, damage to the screws is prevented, and the screening is more convenient without affecting the use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the front structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the local structure of the transmission circular plate of the utility model;

[0025] Figure 3 This is a schematic diagram of the back structure of the utility model;

[0026] Figure 4 It is a schematic diagram of the cross-sectional structure of the collection frame of the utility model.

[0027] In the figure: 1 support fixing plate, 2 support vertical rod, 3 screw screening unit, 31 fixed circular plate, 32 support cylinder, 33 rotating sleeve, 34 transmission circular plate, 35 power gear, 36 power motor, 37 output cylinder, 38 support cylinder, 39 mobile fixed block, 310 support frame, 311 power air gun, 312 screening camera, 4 screw protection collection unit, 41 stable support block, 42 ​​arc protection plate, 43 protection inner ring, 44 magnetic fixing ring, 45 collection frame, 46 arc protection cover, 47 guide inclined plate. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-4 ,This embodiment provides a technical solution: a protective structure for screw screening, comprising a supporting fixing plate 1, a screw screening unit 3, and a screw protection collection unit 4;

[0030] Support fixing plate 1: The four corners of the lower surface are respectively fixedly connected to a support leg, the upper surface of the support fixing plate 1 is fixedly connected to four rectangular array support vertical rods 2, the upper surface of the support fixing plate 1 is provided with a screw screening unit 3 at a position between the four support vertical rods 2, and the four corners of the support fixing plate 1 are provided with circular chamfers;

[0031] The screw protection collection unit 4 includes a stable support block 41, an arc-shaped protection plate 42, a protection inner ring 43, a magnetic fixing ring 44, a collection frame 45 and an arc-shaped protection cover 46. The upper surface of the fixed circular plate 31 in the screw screening unit 3 is fixedly connected to four annular array stable support blocks 41, and one side corresponding to the four stable support blocks 41 is fixedly connected to a curved protection plate 42 respectively. The upper surface of the conveying circular plate 34 in the screw screening unit 3 is fixedly connected to a magnetic fixing ring 44, and the four curved protection plates 42 are arranged at the outer side of the magnetic fixing ring 44. A support frame is fixedly sleeved on the support cylinder 32 in the screw screening unit 3, and the support frame is arranged at the upper side of the conveying circular plate 34. The support frame is fixedly connected with the protection inner ring 43, and the protection inner ring 43 is arranged on the magnetic fixing ring 4 4, the magnetic fixing ring 44 corresponds to the four arc-shaped protective plates 42, and the corresponding side surfaces of the four arc-shaped protective plates 42 and the magnetic fixing ring 44 are respectively fixedly connected with a plurality of equally spaced protective rubber strips, and the front side and the right side of the fixed circular plate 31 are respectively provided with notches, and the two notches respectively penetrate the upper and lower sides of the fixed circular plate 31, and each notch is respectively arranged at a position between the two arc-shaped protective plates 42, and the positions of the lower side surface of the fixed circular plate 31 located on both sides of the notch are respectively fixedly connected with the collecting frame 45 by bolts, and the positions of the upper side surface of the fixed circular plate 31 located on both sides of the notch are respectively fixedly connected with an arc-shaped protective cover 46, and the two arc-shaped protective covers 46 are respectively fixedly connected with the collecting frame 45 by pins, and the openings of the two arc-shaped protective covers 46 correspond to the conveying circular plate 34 respectively.

[0032] The support fixing plate 1 is used to fix the support device, the support vertical rod 2 is used to fix the fixed circular plate 31, the screw screening unit 3 is used to screen the screws, the stable support block 41 is used to fix the arc-shaped protective plate 42, the arc-shaped protective plate 42 and the protective inner ring 43 cooperate to allow the screws to move between the arc-shaped protective plate 42 and the protective inner ring 43, thereby transporting the screws, the magnetic fixing ring 44 is used to make the screws more firmly fixed, the collection frame 45 is used to collect the screws, thereby screening, when the screws are screened by the screening camera 312, the unqualified screws are collected from the collection frame 45 on the right, and the qualified screws are collected from the front collection frame 45, and the arc-shaped protective cover 46 is used for protection to prevent the screws from falling, thereby using them.

[0033] The screw protection collection unit 4 further includes a guide inclined plate 47 . A guide inclined plate 47 is fixedly connected to each of the two collection frames 45 . The upper surface of each guide inclined plate 47 is provided with a plurality of friction protrusions at equal intervals.

[0034] The guiding inclined plate 47 is used to guide the screws to fall into the collecting frame 45, thereby slowing down the falling speed and preventing the screws from being damaged, thereby protecting the screws.

[0035] The screw protection collection unit 4 also includes a protective pad. The inner bottom surface of each collection frame 45 is fixedly connected to the protective pad. The upper surface of each protective pad is provided with a plurality of rubber protrusions at equal intervals.

[0036] The protective pad is used to protect the screws, thereby protecting the screws. The protective pad is made of rubber elastic material to protect the screws.

[0037] The screw screening unit 3 includes a fixed circular plate 31, a supporting cylinder 32, a rotating sleeve 33, a transmission circular plate 34, a supporting cylinder 38, a movable fixed block 39 and a screening camera 312. The upper surface of the supporting fixed plate 1 is located between the four supporting vertical rods 2 and is fixedly connected to a supporting cylinder 32. The upper surfaces of the four supporting vertical rods 2 are fixedly connected to a fixed circular plate 31. A circular hole is opened on the upper surface of the fixed circular plate 31. The circular hole passes through the upper and lower sides of the fixed circular plate 31. The upper end of the supporting cylinder 32 passes through the circular hole. The supporting cylinder 32 is rotatably connected to the rotating sleeve 33 through a bearing. A transmission circular plate 34 is fixedly sleeved on the rotating sleeve 33. The transmission circular plate 34 is arranged on A support cylinder 38 is fixedly connected to the upper side of the fixed circular plate 31, and the upper surface of the fixed circular plate 31 is located at the rear side of the conveying circular plate 34. The support cylinder 38 is arranged between two arc-shaped protective plates 42. A limit ball is fixedly connected to the upper end of the support cylinder 38. A movable fixed block 39 is slidably sleeved on the support cylinder 38. A thread is provided on the movable fixed block 39, and the thread is threadedly connected with a bolt. The front side of the movable fixed block 39 is fixedly connected with the screening camera 312 through a fixing frame. The screening camera 312 corresponds to the conveying circular plate 34, and the input end of the screening camera 312 is electrically connected to the output end of the external power supply through an external control switch group.

[0038] The fixed circular plate 31 is used to fix the supporting cylinder 38, and the supporting cylinder 38 is used to support the movable fixed block 39. The movable fixed block 39 is used to fix the screening camera 312. The screening camera 312 uses a high-definition screening camera to sort screws for easy screening. The movable fixed block 39 is adjusted to a suitable position on the supporting cylinder 38, and then the movable fixed block 39 is fixed to the supporting cylinder 38 by bolts. The supporting cylinder 32 is used to fix the rotating sleeve 33, and the rotating sleeve 33 is used to fix the conveying circular plate 34. The conveying circular plate 34 is used to transport screws for screening.

[0039] The screw screening unit 3 also includes a power gear 35, a power motor 36 and an output cylinder 37. A power motor 36 is fixedly connected to the upper surface of the supporting fixing plate 1 at a position on the left side of the supporting cylinder 32. The output shaft on the power motor 36 is fixedly engaged with the output cylinder 37. The output cylinder 37 and a power gear 35 are fixedly sleeved on the rotating sleeve 33. The two power gears 35 are meshed and connected with each other. The input end of the power motor 36 is electrically connected to the output end of the external power supply through an external control switch group.

[0040] The power motor 36 is started to rotate the output cylinder 37, and the output cylinder 37 drives one of the power gears 35 to rotate. The two power gears 35 are meshed to rotate the other power gear 35, thereby providing power for the movement of the screw, which is convenient for sorting.

[0041] The screw screening unit 3 also includes a support frame 310 and a power air gun 311. The upper side of the protective inner ring 43 is located at the positions corresponding to the two collecting frames 45, and a support frame 310 is fixedly connected to each of them. A power air gun 311 is fixedly connected to each of the two support frames 310. The jet nozzles on the two power air guns 311 correspond to the magnetic fixing ring 44. The input end of the power air gun 311 is electrically connected to the output end of the external power supply through an external control switch group.

[0042] The support frame 310 is used to fix the power air gun 311. The power air gun 311 is started to blow the screws and let the screws fall into the collection frame 45 for sorting and collection. The power air gun 311 uses an air pump air gun to provide power for pushing the screws to move.

[0043] The working principle of a protective structure for screw screening provided by the utility model is as follows: first, the screw is placed on the magnetic fixing ring 44 from the left side, and the power motor 36 is started to rotate the output cylinder 37, and the output cylinder 37 drives one of the power gears 35 to rotate, and the two power gears 35 are meshed to rotate the other power gear 35, thereby providing power for the movement of the screw to rotate the transmission circular plate 34, and the support cylinder 38 is fixed by the fixed circular plate 31, and the support cylinder 38 is used to support the mobile fixed block 39, and the mobile fixed block 39 is used to fix the screening camera 312, and the screening camera 312 adopts a high-definition screening camera to sort the screws. After screening, the support frame 310 is used to fix the power air gun 311, and the power air gun 311 Start to blow the screws and let them fall into the collection frame 45. After the screws are screened by the screening camera 312, unqualified screws are collected from the collection frame 45 on the right, and qualified screws are collected from the collection frame 45 on the front for screening. During screening, the stable support block 41 is used to fix the arc-shaped protective plate 42. The arc-shaped protective plate 42 and the protective inner ring 43 cooperate to allow the screws to move between the arc-shaped protective plate 42 and the protective inner ring 43, thereby transporting the screws. The magnetic fixing ring 44 is used to fix the screws more firmly. The guiding inclined plate 47 is used to guide the screws to fall into the collection frame 45, thereby slowing down the falling speed and preventing the screws from being damaged. The protective cushion is used to protect the screws.

[0044] It is worth noting that the core chip of the external control switch group disclosed in the above embodiments is a PLC single-chip microcomputer, the power air gun 311 adopts an air pump air gun, the screening camera 312 adopts a high-definition screening camera, the power motor 36 adopts a servo motor, and the external control switch group controls the power air gun 311, the screening camera 312 and the power motor 36 using methods commonly used in the prior art.

[0045] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A protective structure for screw screening, characterized in that: It comprises a supporting fixing plate (1), a screw screening unit (3), and a screw protection collecting unit (4); Support fixing plate (1): the four corners of the lower surface are respectively fixedly connected to a support leg, the upper surface of the support fixing plate (1) is fixedly connected to four rectangular array support vertical rods (2), the upper surface of the support fixing plate (1) is provided with a screw screening unit (3) at a position between the four support vertical rods (2), and the four corners of the support fixing plate (1) are provided with circular chamfers; The screw protection collection unit (4) comprises a stable support block (41), an arc-shaped protection plate (42), a protection inner ring (43), a magnetic fixing ring (44), a collection frame (45) and an arc-shaped protection cover (46). The upper surface of the fixed circular plate (31) in the screw screening unit (3) is fixedly connected to four annular array stable support blocks (41), and one side corresponding to each of the four stable support blocks (41) is fixedly connected to an arc-shaped protection plate (42). The upper surface of the conveying circular plate (34) in the screw screening unit (3) is fixedly connected to a magnetic fixing ring (44). The four arc-shaped protection plates (42) are arranged at the outer side of the magnetic fixing ring (44). A support frame is fixedly sleeved on the support cylinder (32) in the screw screening unit (3). The support frame is arranged at the upper side of the conveying circular plate (34). The support frame is fixedly connected to the protection inner ring (43). The protection inner ring (43) is provided The magnetic fixing ring (44) is arranged at a position inside the magnetic fixing ring (44), the magnetic fixing ring (44) corresponds to four arc-shaped protective plates (42), and the corresponding side surfaces of the four arc-shaped protective plates (42) and the magnetic fixing ring (44) are respectively fixedly connected to a plurality of equally spaced protective rubber strips, the front side and the right side of the fixed circular plate (31) are respectively provided with notches, the two notches respectively penetrate the upper and lower sides of the fixed circular plate (31), and each notch is respectively arranged at a position between the two arc-shaped protective plates (42), the lower side surface of the fixed circular plate (31) is respectively fixedly connected to the collection frame (45) by bolts at the positions on both sides of the notch, and the upper side surface of the fixed circular plate (31) is respectively fixedly connected to an arc-shaped protective cover (46) at the positions on both sides of the notch, the two arc-shaped protective covers (46) are respectively fixedly connected to the collection frame (45) by pins, and the openings on the two arc-shaped protective covers (46) respectively correspond to the conveying circular plate (34).

2. A screw screening protection structure according to claim 1, characterized in that: The screw protection collection unit (4) further comprises a guide inclined plate (47), and one guide inclined plate (47) is fixedly connected to each of the two collection frames (45), and a plurality of friction protrusions with equal spacing are respectively arranged on the upper side surface of each guide inclined plate (47).

3. A screw screening protection structure according to claim 1, characterized in that: The screw protection collection unit (4) further comprises a protective soft pad, the inner bottom end surface of each collection frame (45) is fixedly connected to the protective soft pad, and the upper side surface of each protective soft pad is provided with a plurality of rubber protrusions at equal intervals.

4. A screw screening protection structure according to claim 1, characterized in that: The screw screening unit (3) comprises a fixed circular plate (31), a supporting cylinder (32), a rotating sleeve (33), a transmission circular plate (34), a supporting cylinder (38), a movable fixed block (39) and a screening camera (312); the upper surface of the supporting fixed plate (1) is located between four supporting vertical rods (2) and is fixedly connected to a supporting cylinder (32); the upper surfaces of the four supporting vertical rods (2) are fixedly connected to a fixed circular plate (31); a circular hole is opened on the upper surface of the fixed circular plate (31); the circular hole passes through the upper and lower sides of the fixed circular plate (31); the upper end of the supporting cylinder (32) passes through the circular hole; the supporting cylinder (32) is rotatably connected to the rotating sleeve (33) via a bearing; the rotating sleeve (33) is fixedly sleeved with a transmission circular plate (34); the transmission circular plate (3 4) is arranged at a position on the upper side of the fixed circular plate (31), the upper surface of the fixed circular plate (31) is located at a position located at the rear side of the conveying circular plate (34) and is fixedly connected to a supporting cylinder (38), the supporting cylinder (38) is arranged between two arc-shaped protective plates (42), a limiting ball is fixedly clamped at the upper end of the supporting cylinder (38), a movable fixed block (39) is slidably sleeved on the supporting cylinder (38), a thread is provided on the movable fixed block (39), and the thread is threadedly connected with a bolt, the front side of the movable fixed block (39) is fixedly clamped with a screening camera (312) through a fixing frame, the screening camera (312) corresponds to the conveying circular plate (34), and the input end of the screening camera (312) is electrically connected to the output end of an external power supply through an external control switch group.

5. A screw screening protection structure according to claim 4, characterized in that: The screw screening unit (3) further comprises a power gear (35), a power motor (36) and an output cylinder (37); a power motor (36) is fixedly connected to the upper surface of the support fixing plate (1) at a position located on the left side of the support cylinder (32); an output shaft on the power motor (36) is fixedly engaged with the output cylinder (37); a power gear (35) is fixedly sleeved on the output cylinder (37) and the rotating sleeve (33); the two power gears (35) are meshed and connected with each other; an input end of the power motor (36) is electrically connected to an output end of an external power supply via an external control switch group.

6. A screw screening protection structure according to claim 4, characterized in that: The screw screening unit (3) further comprises a support frame (310) and a power air gun (311); the upper side of the protective inner ring (43) is located at positions corresponding to the two collecting frames (45) and is respectively fixedly connected to a support frame (310); the two support frames (310) are respectively fixedly connected to a power air gun (311); the air jets on the two power air guns (311) correspond to the magnetic fixing ring (44); and the input end of the power air gun (311) is electrically connected to the output end of an external power supply via an external control switch group.

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